Globe Valve, 300 lb SWP @ 550F - 1000 lb WOG @ 150F, Heavy Duty Sevice, Special S.S. Hardened Seat Ring & Disc, Threaded Ends, Gland Packed, Union Bonnet, Conforms to MSS SP-80. Type 3(Note: This Valve has flat seat shutoff with plug type disc for throttling action and replaceable seat and disc), Available Sizes (1/4" - 2"). Materials: Body, Stem & Bonnet: Bronze ASTM B61, Seat Ring: Stainless Steel ASTM A276 TY.420, Disc Ring: Bronze ASTM B62 (Used on 1 1/4" and larger valves only)